I'm currently involved in a complete tear down and CNC upgrade on a very large gantry machine (7.5 HP saw, dual 15 HP routers, dual air drills) that I affectionately refer to as The Beast. It has old Siemens brushless DC servo motors that we're keeping, but we're scrapping the old SiemoDrive servo amps. This is a big machine, and the typical servo drives from Gecko, Automation Direct, etc. don't quite cut it.

X: 20 HP (50 A)
Y: 10 HP (25 A)
Z: 5 HP (13 A)

Any suggestions? I'd like something modern and reliable, but we're on a budget. I don't mind paying for quality, but we don't need a lot of features and I don't want to pay extra if it's only for a name brand logo.

LinuxCNC will be operating the servo drives via MESA Electronics 5i25 and 7i77 boards.

Thanks in advance.